Tire-tread



H. M. FRY.

TIRE TREAD. APPLICATION msn Ame, 1920.

Patented Sept. 13, 192l.

NUNITED STATES HARRY M. FRY, 0F JQHNSTOWN, PENNSYLVANIA.

y Tras.Jriaiian.`

T0 all whom it may conee'm.' l

Be it known that I, HARRY M. FRY, a citizen of the United States, residing at Johnstown, in the county of Cambria and State of Pennsylvania, have invented certain new and `useful Improvements in T ire-Treads, of which the followin is a specification.

My` invention re ates to means forfsecurin protecting treads on automobile wheels.

y object is 'to provide means which` can be easily attached to any automobile wheel whereby a treadf Iliade of rubber and fiber may beeasily secured on the wheel over a worn shoe to make it last longer, or over a new shoe to protect it.

A leading feature of the invention consists of a pair of detachable steel rims adapted to be secured to the rim of the automobile wheel at opposite sides thereof, and provided with means for carrying a small inflated tube to secure an additional tread on the wheel.

The invention consists in certain novel features of construction and arrangement of parts, as will be hereinafter described and claimed, reference being had to the accompanying drawings, in which Y Figure 1 is a vertical section of Fig. 2. Fig. 2 is a side elevation of a wheel provided with my improvement. Fig. 3 is a side elevation of one of the securing rims. Fig. 4 is a vertical section of Fig. 3. Fig. 5 is a perspective sectionalv view on an enlarged scale taken through the lower side of a wheel equipped with my device. Fig. 6 is a broken view illustrating in side elevation, a slightly modified form of detachable steel rim; and,

Fig. 7 is a sectional view illustrating the n modification shown in Fig. 6.

The numeral 1 indicates an automobile wheel having a felly 2 of ordinary or preferred construction.

Rigidly secured to the felly 2 on either i side thereof is a detachable steel rim 3 composed of a vertical section 4 for securing the rim to the felly, an angular section 5 extending outwardly therefrom, and a curved section 6.

The annular sections 6 of the rims are each adapted to receive a small infiated tube 7 with the `two side edges of the protecting tread received between said tube 7 and the annular section 6 of the detachable rim, whereby the protecting tread, 8, is securely held on the t1re of the wheel.

spr-emanen of Letters Patent.

Patented sept. 1.3, 1921.

nummined April e, i920. serial No. 371,614.`

y The steel flange members 3, formed of the sections 4, 5, and 6, are rigidly and detach- `ably secured to the felly 2 in any ordinary lr preferred manner, as by bolts, screws, or otherwise. y L

y It is apparent that my device can` be attached to any ordinary automobile wheel of suitable diameter to correspond to the diameter ofjthe detachable steel rim.

Inoperation, when the two side edges of the auxiliary tread 8 are received between the `small inflated tubes 7 and the" annular "sections 6 of the detachable rims,` and the tubes 7 are well inflated, the auxiliary tread is securely held in operative position on the wheel; and when the small tubes 7 are deflated, the auxiliary or protecting tread can be easily and conveniently removed from the wheel.

In the modification illustrated in Figs. 6 and 7, I have shown the section 4 of the detachable steel flange member provided with ears 11 having suitable openings for the reception of bolts 12, whereby the flange members may be secured to the wheels by bolting the flange members to each other with the felly of the wheel received between them; 'thereby requiring no perforation of any kind to be made in the felly of a wheel in order to attach my improvement thereto.

The ears 11 are preferably so arranged that the securing bolts 12 may be made to come at one side of the spokes of the wheeleither at the front or rear, as the case may require--in order to insure the detachable rims against any possibility of creeping on the wheels.

Having now described my invention, what I claim as new and desire to protect by Letters Patent is 1. In a device of the character described. the combination with the rim of a wheel and a pneumatic tire secured thereon, of a pair of annular flange members secured at the side thereof and provided with annular channels; a protecting tread received over said tire and provided around its inner edges with annular outwardly curved sections adapted to be received into said annular channels; and a pair of pneumatic securing 'tires of a diameter when deflated to be received into said channels over said annular outwardly curved sections of the protecting tread, whereby when the securing tires are inflated the inner edges of the protecting i treadl'are'clfamped between the securing tires of a protecting tread secured over said' tiref and providedv around its inner edges with curvedsectlons; and; pneumatic clamping means at thesides of the rim for engaging said curved sections of the 'protecting` tread to hold'the same on the tire.

The combination with the rim of a wheel having means for securing a pneumatic ytire thereon; of la pair ojl annular angeimembers rigidly and detachably secured at the sides ofthe rim and spaced from ythe tire-securing means, said flange members having outwardlyfacing annular channels;

Yand` pneumatic clamping means carried in said :channels 'and' adapted to 'coperate 'therewith to engage and hold the protecting tread von 'the tire.

4. vThe combination with'V the rim of a with vertical flanges adapted to engage the sides of the rim and projecting inwardly be- -y'ond the inner circumference of the rim and provided in said inwardly projecting portions with alined bores adapted to receive bolts for securing the opposing flanges in rigid relation to each otheuwith the rim clamped between them; said bores being cir cumferentially spaced from each other a distance equal to the distance apart of the spokes of the wheel, or multiples of said last named distance, whereby said clampingr bolts may each be in engagement with a spoke it desired; said annular members being also provided with annular channels; and pneu matic clamping means carried by said chaunelsfor detachably securing thereto a pretecting tread for the pneumatic tire.

In testimony whereof l ailix my signature.

HARRY M. FRY. 

